code: public void setParameter(MethodDescriptor methodDesc, int param, TypeQualifierValue<?> tqv, TypeQualifierAnnotation tqa) {
          Map<TypeQualifierValue<?>, TypeQualifierAnnotation> map = parameterMap.get(methodDesc, param);
          if (map == null) {
              map = new HashMap<>();
              parameterMap.put(methodDesc, param, map);
          }
          map.put(tqv, tqa);
  
          if (DEBUG) {
              System.out.println("tqdb: " + methodDesc + " parameter " + param + " for " + tqv + " ==> " + tqa);
          }
      }
docs: Set a TypeQualifierAnnotation on a method parameter.
  
  @param methodDesc
  the method
  @param param
  the parameter (0 == first parameter)
  @param tqv
  the type qualifier
  @param tqa
  the type qualifier annotation