code: public static Map<String, QueryParameter> getChildDependentParameters(Report report, QueryParameter p) {
      	if (report == null) {
      		return new HashMap<String, QueryParameter>();
      	}
          return getChildDependentParameters(report.getParameters(), p);
      }
docs: Get child dependent parameters
  
  @param report next report object
  @param p      current parameter
  @return a map of all parameters that use the current parameter in theirs source definition