code: public ListAttachedGroupPoliciesResult withAttachedPolicies(AttachedPolicy... attachedPolicies) {
          if (this.attachedPolicies == null) {
              setAttachedPolicies(new com.amazonaws.internal.SdkInternalList<AttachedPolicy>(attachedPolicies.length));
          }
          for (AttachedPolicy ele : attachedPolicies) {
              this.attachedPolicies.add(ele);
          }
          return this;
      }
docs: <p>
  A list of the attached policies.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setAttachedPolicies(java.util.Collection)} or {@link #withAttachedPolicies(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param attachedPolicies
  A list of the attached policies.
  @return Returns a reference to this object so that method calls can be chained together.