code: @Override
  	public void addField(final SchemaField field) {
  
  		if (field instanceof FieldDefinition) {
  			addField((FieldDefinition) field);
  		} else if (field instanceof CopyFieldDefinition) {
  			addCopyField((CopyFieldDefinition) field);
  		}
  	}
docs: /*
  (non-Javadoc)
  @see org.springframework.data.solr.core.schema.SchemaOperations#addField(org.springframework.data.solr.core.schema.SchemaDefinition.SchemaField)