def METHOD_NAME(self) -> google.protobuf.internal.containers.RepeatedScalarFieldContainer[builtins.str]:
    """Opaque string inserted into error messages created by the runtime.
    This is intended to store the list of names of the nodes from the
    original graph that this node was derived. For example if this node, say
    C, was result of a fusion of 2 nodes A and B, then 'original_node' would
    be {A, B}. This information can be used to map errors originating at the
    current node to some top level source code.
    """