code: public boolean hasIconRelationship(String featureTable) {
  		return hasStyleRelationship(
  				getMappingTableName(TABLE_MAPPING_ICON, featureTable),
  				featureTable, IconTable.TABLE_NAME);
  	}
docs: Determine if an icon relationship exists for the feature table
  
  @param featureTable
  feature table
  @return true if relationship exists