code: public Workspace withModificationStates(ModificationState... modificationStates) {
          if (this.modificationStates == null) {
              setModificationStates(new com.amazonaws.internal.SdkInternalList<ModificationState>(modificationStates.length));
          }
          for (ModificationState ele : modificationStates) {
              this.modificationStates.add(ele);
          }
          return this;
      }
docs: <p>
  The modification states of the WorkSpace.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setModificationStates(java.util.Collection)} or {@link #withModificationStates(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param modificationStates
  The modification states of the WorkSpace.
  @return Returns a reference to this object so that method calls can be chained together.