code: public ListMemberAccountsResult withMemberAccounts(String... memberAccounts) {
          if (this.memberAccounts == null) {
              setMemberAccounts(new java.util.ArrayList<String>(memberAccounts.length));
          }
          for (String ele : memberAccounts) {
              this.memberAccounts.add(ele);
          }
          return this;
      }
docs: <p>
  An array of account IDs.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setMemberAccounts(java.util.Collection)} or {@link #withMemberAccounts(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param memberAccounts
  An array of account IDs.
  @return Returns a reference to this object so that method calls can be chained together.