public void addToSourceTables(SourceTable elem) {
    if (this.sourceTables == null) {
      this.sourceTables = new java.util.ArrayList<SourceTable>();
    }
    this.sourceTables.add(elem);
  }
Returns true if field materializationTime is set (has been assigned a value) and false otherwise
standalone-metastore/metastore-common/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/metastore/api/CreationMetadata.java