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from da11b84 [BEAM-13454] Fix and test dataframe read_fwf. (#16064) add d41ae47 [BEAM-12976] Pipeline visitor to discover pushdown opportunities. (#16176) No new revisions were added by this update. Summary of changes: .../graph/ProjectionProducerVisitor.java | 83 +++++++ .../graph/ProjectionProducerVisitorTest.java | 274 +++++++++++++++++++++ 2 files changed, 357 insertions(+) create mode 100644 runners/core-construction-java/src/main/java/org/apache/beam/runners/core/construction/graph/ProjectionProducerVisitor.java create mode 100644 runners/core-construction-java/src/test/java/org/apache/beam/runners/core/construction/graph/ProjectionProducerVisitorTest.java