How to use the apio.managers.scons.SCons function in apio

def cli(ctx, board, fpga, pack, type, size, project_dir,
        verbose, verbose_yosys, verbose_arachne):
    """Synthesize the bitstream."""

    # Run scons
    exit_code = SCons(project_dir).build({
        'board': board,
        'fpga': fpga,
        'size': size,
        'type': type,
        'pack': pack,
        'verbose': {
            'all': verbose,
            'yosys': verbose_yosys,
            'arachne': verbose_arachne
        }
    })
    ctx.exit(exit_code)

def cli(ctx, all, top, nostyle, nowarn, warn, project_dir):
    """Lint the verilog code."""

    exit_code = SCons(project_dir).lint({
        'all': all,
        'top': top,
        'nostyle': nostyle,
        'nowarn': nowarn,
        'warn': warn
    })
    ctx.exit(exit_code)

def cli(ctx, board, serial_port, ftdi_id, sram, project_dir,
        verbose, verbose_yosys, verbose_arachne):
    """Upload the bitstream to the FPGA."""

    drivers = Drivers()
    drivers.pre_upload()
    # Run scons
    exit_code = SCons(project_dir).upload({
        'board': board,
        'verbose': {
            'all': verbose,
            'yosys': verbose_yosys,
            'arachne': verbose_arachne
        }
    }, serial_port, ftdi_id, sram)
    drivers.post_upload()
    ctx.exit(exit_code)

def cli(ctx, project_dir):
    """Launch the verilog simulation."""

    exit_code = SCons(project_dir).sim()
    ctx.exit(exit_code)

def cli(ctx, project_dir):
    """Verify the verilog code."""
    exit_code = SCons(project_dir).verify()
    ctx.exit(exit_code)

def cli(ctx, project_dir):
    """Clean the previous generated files."""
    exit_code = SCons(project_dir).clean()
    ctx.exit(exit_code)

def cli(ctx, board, fpga, pack, type, size, project_dir,
        verbose, verbose_yosys, verbose_arachne):
    """Bitstream timing analysis."""

    # Run scons
    exit_code = SCons(project_dir).time({
        'board': board,
        'fpga': fpga,
        'size': size,
        'type': type,
        'pack': pack,
        'verbose': {
            'all': verbose,
            'yosys': verbose_yosys,
            'arachne': verbose_arachne
        }
    })
    ctx.exit(exit_code)