visits all nodes in the transform hierarchy , in transitive order . concode_field_sep Deque<TransformTreeNode> transformStack concode_elem_sep Map<PInput,TransformTreeNode> producingTransformNode concode_field_sep void popNode concode_elem_sep void pushNode concode_elem_sep void addInput concode_elem_sep TransformTreeNode getCurrent concode_elem_sep void setOutput
void function ( Pipeline . PipelineVisitor arg0 , Set < PValue > arg1 ) { transformStack . peekFirst ( ) . visit ( arg0 , arg1 ) ; }