public boolean hasExtraFields(PdxType other) {
    for (PdxField ft : fields) {
      if (!ft.isDeleted() && other.getPdxField(ft.getFieldName()) == null) {
        return true;
      }
    }
    return false;
  }
Return true if the this type has a field that the other type does not have.

@param other the type we are comparing to
@return true if the this type has a field that the other type does not have.
geode-core/src/main/java/org/apache/geode/pdx/internal/PdxType.java