code: public GetMappingResult withMapping(MappingEntry... mapping) {
          if (this.mapping == null) {
              setMapping(new java.util.ArrayList<MappingEntry>(mapping.length));
          }
          for (MappingEntry ele : mapping) {
              this.mapping.add(ele);
          }
          return this;
      }
docs: <p>
  A list of mappings to the specified targets.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setMapping(java.util.Collection)} or {@link #withMapping(java.util.Collection)} if you want to override
  the existing values.
  </p>
  
  @param mapping
  A list of mappings to the specified targets.
  @return Returns a reference to this object so that method calls can be chained together.