How to use the awkward.array.base.AwkwardArray function in awkward

if self._cache is not None and isinstance(self._array, VirtualArray.TransientKey):
            try:
                del self._cache[self._array]
            except:
                pass

    def __len__(self):
        return self.shape[0]

    def __getitem__(self, where):
        return self.array[where]

    def __setitem__(self, where, what):
        raise ValueError("assignment destination is read-only")
        
class VirtualObjectArray(awkward.array.base.AwkwardArray):
    def __init__(self, generator, content):
        self.generator = generator
        self.content = content

    @property
    def generator(self):
        return self._generator

    @generator.setter
    def generator(self, value):
        if not callable(value):
            raise TypeError("generator must be a callable (of one argument: the array slice)")
        self._generator = value

    @property
    def content(self):

def _util_pandas(self, seen):
        import awkward.pandas
        if id(self) in seen:
            return seen[id(self)]
        else:
            out = seen[id(self)] = self.copy()
            out.__class__ = awkward.pandas.mixin("UnionSeries", self)
            out._contents = [x._util_pandas(seen) if isinstance(x, awkward.array.base.AwkwardArray) else x for x in out._contents]
            return out

def maybemixin(sample, awkwardtype):
        if issubclass(sample, Methods):
            assert issubclass(sample, awkward.array.base.AwkwardArray)
            allbases = tuple(x for x in sample.__bases__ if not issubclass(x, awkward.array.base.AwkwardArray)) + (awkwardtype,)
            return type(awkwardtype.__name__ + "Methods", allbases, {})
        else:
            return awkwardtype

def _util_isstringslice(cls, where):
        if isinstance(where, awkward.util.string):
            return True
        elif isinstance(where, bytes):
            raise TypeError("column selection must be str, not bytes, in Python 3")
        elif isinstance(where, tuple):
            return False
        elif isinstance(where, (cls.numpy.ndarray, AwkwardArray)) and issubclass(where.dtype.type, (numpy.str, numpy.str_)):
            return True
        elif isinstance(where, (cls.numpy.ndarray, AwkwardArray)) and issubclass(where.dtype.type, (numpy.object, numpy.object_)) and not issubclass(where.dtype.type, (numpy.bool, numpy.bool_)):
            return len(where) > 0 and all(isinstance(x, awkward.util.string) for x in where)
        elif isinstance(where, (cls.numpy.ndarray, AwkwardArray)):
            return False
        try:
            assert len(where) > 0 and all(isinstance(x, awkward.util.string) for x in where)
        except (TypeError, AssertionError):
            return False
        else:
            return True

import numbers
import re
import types
from collections import OrderedDict
try:
    from collections.abc import Iterable
except ImportError:
    from collections import Iterable

import numpy

import awkward.array.base
import awkward.type
import awkward.util

class Table(awkward.array.base.AwkwardArray):
    """
    Table
    """

    ##################### class Row

    class Row(awkward.util.NDArrayOperatorsMixin):
        """
        Table.Row
        """

        __slots__ = ["_table", "_index"]

        def __init__(self, table, index):
            self._table = table
            self._index = index

def _util_arraystr(cls, array):
        if isinstance(array, cls.numpy.ndarray):
            return cls._util_arraystr_draw(array)
        elif isinstance(array, AwkwardArray):
            return str(array).replace("\n", "")
        else:
            return repr(array)

if len(self) <= 6:
            return "[{0}]".format(" ".join(repr(x) for x in self))
        else:
            return "[{0} ... {1}]".format(" ".join(repr(x) for x in self[:3]), ", ".join(repr(x) for x in self[-3:]))

    def __getitem__(self, where):
        content = self._content[where]
        if isinstance(where, (numbers.Integral, numpy.integer)):
            return self.generator(content)
        else:
            return [self.generator(x) for x in content]

    def __setitem__(self, where, what):
        raise ValueError("assignment destination is read-only")

class PersistentArray(awkward.array.base.AwkwardArray):
    def __init__(self, dtype, shape, read, write):
        self.dtype = dtype
        self.shape = shape
        self.read = read
        self.write = write

    @property
    def dtype(self):
        return self._dtype

    @dtype.setter
    def dtype(self, value):
        self._dtype = numpy.dtype(value)

    @property
    def shape(self):

def _util_pandas(self, seen):
        import awkward.pandas
        if id(self) in seen:
            return seen[id(self)]
        else:
            out = seen[id(self)] = self.copy()
            out.__class__ = awkward.pandas.mixin("StringSeries", self)
            if isinstance(self._content, awkward.array.base.AwkwardArray):
                out._content = out._content._util_pandas(seen)
            return out