cmake find_package(Parquet) examples

apache/arrow cpp/examples/parquet/parquet_arrow/CMakeLists.txt :38 

find_package(Parquet REQUIRED)

apache/arrow python/CMakeLists.txt :447 

find_package(Parquet REQUIRED)

PDAL/PDAL cmake/arrow.cmake :6 

find_package(Parquet REQUIRED CONFIG)