question: returns a sequence of field names in the order that they show up in the schema . concode_field_sep BufferAllocator allocator concode_elem_sep org.slf4j.Logger logger concode_elem_sep MaterializedField field concode_elem_sep CallBack callBack concode_field_sep MajorType getLastPathType concode_elem_sep T addOrGet concode_elem_sep boolean supportsDirectRead concode_elem_sep BufferAllocator getAllocator concode_elem_sep int size concode_elem_sep T typeify concode_elem_sep void allocateNew concode_elem_sep ValueVector getChild concode_elem_sep T getChild concode_elem_sep VectorWithOrdinal getChildVectorWithOrdinal concode_elem_sep MaterializedField getField concode_elem_sep void close
target: Collection < String > function ( ) { return Sets . newLinkedHashSet ( Iterables . transform ( field . getChildren ( ) , new Function < MaterializedField , String > ( ) { @ Nullable @ Override public String apply ( MaterializedField arg0 ) { return Preconditions . checkNotNull ( arg0 ) . getLastName ( ) ; } } ) ) ; }