question: @ Override public synchronized MXBeanMapping mappingForType ( Type objType , MXBeanMappingFactory factory ) throws OpenDataException { if ( inProgress . containsKey ( objType ) ) { throw new OpenDataException ( "Recursive data structure, including " + typeName ( objType ) ) ; } MXBeanMapping mapping ; mapping = getMapping ( objType ) ; if ( mapping != null ) return mapping ; inProgress . put ( objType , objType ) ; try { mapping = makeMapping ( objType , factory ) ; } catch ( OpenDataException e ) { throw openDataException ( "Cannot convert type: " + typeName ( objType ) , e ) ; } finally { inProgress . remove ( objType ) ; } putMapping ( objType , mapping ) ; return mapping ; }
target:  Get the converter for the given Java type, creating it if necessary. 