'Return all graphs contained within this block.
For example, a MAKE_FUNCTION block will contain a reference to
the graph for the function body.'

def getContainedGraphs(self):

    contained = []
    for inst in self.insts:
        if (len(inst) == 1):
            continue
        op = inst[1]
        if hasattr(op, 'graph'):
            contained.append(op.graph)
    return contained
