public boolean equals(WMDropMappingRequest that) {
    if (that == null)
      return false;
    if (this == that)
      return true;

    boolean this_present_mapping = true && this.isSetMapping();
    boolean that_present_mapping = true && that.isSetMapping();
    if (this_present_mapping || that_present_mapping) {
      if (!(this_present_mapping && that_present_mapping))
        return false;
      if (!this.mapping.equals(that.mapping))
        return false;
    }

    return true;
  }
Returns true if field corresponding to fieldID 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/WMDropMappingRequest.java