public FieldAnalysisRequest addFieldName(String fieldName){
  if (fieldNames == null) {
    fieldNames=new LinkedList<>();
  }
  fieldNames.add(fieldName);
  return this;
}

public FieldAnalysisRequest addFieldName ( String fieldName ) { if ( fieldNames == null ) { fieldNames = new LinkedList < > ( ) ; } fieldNames . add ( fieldName ) ; return this ; }
adds the given field name for analysis .
