How to use the template.powerpoint.__init__.RecordContainer function in template

class OEPlaceholderAtom(pstruct.type, Record):
    recordtype = 3011
    _fields_ = [
        (uint4, 'placementId'),
        (ubyte1, 'placeholderId'),
        (ubyte1, 'size')
    ]

class ExObjRefAtom(pstruct.type, Record):
    recordtype = 3009
    _fields_ = [
        (uint4, 'exObjId')
    ]

class List(RecordContainer):
    recordtype = 1016

class Slide(RecordContainer):
    recordtype = 1006

class SSlideLayout(pstruct.type, Record):
    recordtype = 1015
    _fields_ = [
        (sint4, 'geom'),
        (dyn.array(ubyte1, 8), 'placeholderId'),
    ]

class SlideAtom(pstruct.type, Record):
    recordtype = 1007
    _fields_ = [
        (SSlideLayout, 'layout'),

_fields_ = [
        (uint4, 'placementId'),
        (ubyte1, 'placeholderId'),
        (ubyte1, 'size')
    ]

class ExObjRefAtom(pstruct.type, Record):
    recordtype = 3009
    _fields_ = [
        (uint4, 'exObjId')
    ]

class List(RecordContainer):
    recordtype = 1016

class Slide(RecordContainer):
    recordtype = 1006

class SSlideLayout(pstruct.type, Record):
    recordtype = 1015
    _fields_ = [
        (sint4, 'geom'),
        (dyn.array(ubyte1, 8), 'placeholderId'),
    ]

class SlideAtom(pstruct.type, Record):
    recordtype = 1007
    _fields_ = [
        (SSlideLayout, 'layout'),
        (sint4, 'masterId'),
        (sint4, 'notesId'),
        (uint2, 'Flags')

l = self.parent['header']['recLength']
        if self.currentsize < int(l):
            return False
        return True

class CString(ptype.type, Record):
    recordtype = 4026

class BinaryTagData(RecordContainer):
    recordtype = 5003

class ProgBinaryTag(RecordContainer):
    recordtype = 5002

class ProgTags(RecordContainer):
    recordtype = 5000

class PST_Notes(RecordContainer):
    recordtype = 1008

class PST_PPDrawing(RecordContainer):
    recordtype = 1036
class PST_DrawingContainer(RecordContainer):
    recordtype = 61442
class PST_GroupShapeContainer(RecordContainer):
    recordtype = 61443
class PST_ShapeContainer(RecordContainer):
    recordtype = 61444
class PST_ShapeClientContainer(RecordContainer):
    recordtype = 61457

recordtype = 1036
class PST_DrawingContainer(RecordContainer):
    recordtype = 61442
class PST_GroupShapeContainer(RecordContainer):
    recordtype = 61443
class PST_ShapeContainer(RecordContainer):
    recordtype = 61444
class PST_ShapeClientContainer(RecordContainer):
    recordtype = 61457

class Handout(RecordContainer):
    recordtype = 4041
    recordtype = 0x0fc9

### office art
class msofbtExtTimeNodeContainer(RecordContainer):
    recordtype = 0xf144
    recordtype = 61764
class msofbtTimeConditionContainer(RecordContainer):
    recordtype = 0xf125
    recordtype = 61733
class msofbtTimeColorBehaviorContainer(RecordContainer):
    recordtype = 0xf12c
    recordtype = 61740

class msofbtTimeCondition(pstruct.type, Record):
    recordtype = 0xf128
    recordtype = 61736

    class __triggerType(pint.enum, pint.uint32_t):
        _fields_ = [
            ('totNone', 0),

recordtype = 0x2b08
    recordtype = 11016

class PSR_BuildList(RecordContainer):
    recordtype = 0x2b02
    recordtype = 11010

class msofbtTimeSetBehaviorContainer(RecordContainer):
    recordtype = 0xf131
    recordtype = 61745

class msofbtTimePropertyList(RecordContainer):
    recordtype = 0xf13d
    recordtype = 61757

class msofbtTimeSetBehaviorContainer(RecordContainer):
    recordtype = 0xf131
    recordtype = 61745

class msofbtTimeEffectBehaviorContainer(RecordContainer):
    recordtype = 0xf12d
    recordtype = 61741

class msofbtTimeBehaviorContainer(RecordContainer):
    recordtype = 0xf12a
    recordtype = 61738

class msofbtClientVisualElement(RecordContainer):
    recordtype = 0xf13c
    recordtype = 61756

class msofbtTimeEffectBehavior(pstruct.type, Record):

_fields_ = [(uint4, 'dwHighDateTime'),(uint4, 'dwLowDateTime')]

class msofbtTimeNode(pstruct.type, Record):
    recordtype = 0xf127
    recordtype = 61735
    _fields_ = [
        (pint.uint32_t, 'masterID'),
        (pint.uint32_t, 'restart'),
        (pint.uint32_t, 'type'),
        (pint.uint32_t, 'fill'),
        (pint.uint32_t, 'syncBehavior'),
        (pint.uint8_t, 'fSyncMaster'),
        (pint.uint32_t, 'propertiesSet'),
    ]

class PSR_ParaBuild(RecordContainer):
    recordtype = 0x2b08
    recordtype = 11016

class PSR_BuildList(RecordContainer):
    recordtype = 0x2b02
    recordtype = 11010

class msofbtTimeSetBehaviorContainer(RecordContainer):
    recordtype = 0xf131
    recordtype = 61745

class msofbtTimePropertyList(RecordContainer):
    recordtype = 0xf13d
    recordtype = 61757

class msofbtTimeSetBehaviorContainer(RecordContainer):

class CString(ptype.type, Record):
    recordtype = 4026

class BinaryTagData(RecordContainer):
    recordtype = 5003

class ProgBinaryTag(RecordContainer):
    recordtype = 5002

class ProgTags(RecordContainer):
    recordtype = 5000

class PST_Notes(RecordContainer):
    recordtype = 1008

class PST_PPDrawing(RecordContainer):
    recordtype = 1036
class PST_DrawingContainer(RecordContainer):
    recordtype = 61442
class PST_GroupShapeContainer(RecordContainer):
    recordtype = 61443
class PST_ShapeContainer(RecordContainer):
    recordtype = 61444
class PST_ShapeClientContainer(RecordContainer):
    recordtype = 61457

class Handout(RecordContainer):
    recordtype = 4041
    recordtype = 0x0fc9

### office art
class msofbtExtTimeNodeContainer(RecordContainer):

# yea, a file really is just a gigantic list of records...
class File(parray.infinite, searchingcontainer):
    _object_ = RecordGeneral

    def __repr__(self):
        if self.initialized:
            records = []
            for v in self.walk():
                n = '%s[%x]'%(v.__class__.__name__,v.recordtype)
                records.append(n)
            return '%s records=%d [%s]'%(self.name(), len(self), ','.join(records))
        return super(File, self).__repr__()

### list of all records
## PowerPoint stream
class Document(RecordContainer):
    recordtype = 1000

class OEPlaceholderAtom(pstruct.type, Record):
    recordtype = 3011
    _fields_ = [
        (uint4, 'placementId'),
        (ubyte1, 'placeholderId'),
        (ubyte1, 'size')
    ]

class ExObjRefAtom(pstruct.type, Record):
    recordtype = 3009
    _fields_ = [
        (uint4, 'exObjId')
    ]

class ProgBinaryTag(RecordContainer):
    recordtype = 5002

class ProgTags(RecordContainer):
    recordtype = 5000

class PST_Notes(RecordContainer):
    recordtype = 1008

class PST_PPDrawing(RecordContainer):
    recordtype = 1036
class PST_DrawingContainer(RecordContainer):
    recordtype = 61442
class PST_GroupShapeContainer(RecordContainer):
    recordtype = 61443
class PST_ShapeContainer(RecordContainer):
    recordtype = 61444
class PST_ShapeClientContainer(RecordContainer):
    recordtype = 61457

class Handout(RecordContainer):
    recordtype = 4041
    recordtype = 0x0fc9

### office art
class msofbtExtTimeNodeContainer(RecordContainer):
    recordtype = 0xf144
    recordtype = 61764
class msofbtTimeConditionContainer(RecordContainer):
    recordtype = 0xf125
    recordtype = 61733
class msofbtTimeColorBehaviorContainer(RecordContainer):

def __repr__(self):
        if self.initialized:
            records = []
            for v in self.walk():
                n = '%s[%x]'%(v.__class__.__name__,v.recordtype)
                records.append(n)
            header = self.parent['header']
            return '%s header={ver=%d,type=%x,length=%d} records=%d [%s]'%(self.name(), int(header['recVer/recInstance']), int(header['recType']), int(header['recLength']), len(self), ','.join(records))
        return super(RecordContainer, self).__repr__()