public List<String> getFieldNames() {
    ArrayList<String> result = new ArrayList<>(fields.size());
    for (PdxField f : fields) {
      if (!f.isDeleted()) {
        result.add(f.getFieldName());
      }
    }
    return Collections.unmodifiableList(result);
  }
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