<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def from_traverse(cls, traverse_block):
 """Create a GremlinFoldedTraverse block as a copy of the given Traverse block."""

        if isinstance(traverse_block, Traverse):
            return cls(traverse_block.direction, traverse_block.edge_name)
        else:
            raise AssertionError(u'Tried to initialize an instance of GremlinFoldedTraverse '
                                 u'with block of type {}'.format(type(traverse_block)))