code: public DescribeExpressionsResult withExpressions(ExpressionStatus... expressions) {
          if (this.expressions == null) {
              setExpressions(new com.amazonaws.internal.SdkInternalList<ExpressionStatus>(expressions.length));
          }
          for (ExpressionStatus ele : expressions) {
              this.expressions.add(ele);
          }
          return this;
      }
docs: <p>
  The expressions configured for the domain.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setExpressions(java.util.Collection)} or {@link #withExpressions(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param expressions
  The expressions configured for the domain.
  @return Returns a reference to this object so that method calls can be chained together.