public SimpleExpression<Character> charAt(Expression<Integer> i) {
        return Expressions.comparableOperation(Character.class, Ops.CHAR_AT, mixin, i);
    }
public SimpleExpression < Character > charAt ( Expression < Integer > i ) { return Expressions . comparableOperation ( Character . class , Ops . CHAR_AT , mixin , i ) ; }
Create a {@code this.charAt(i)} expression

<p>Get the character at the given index</p>

@param i zero based index
@return this.charAt(i)
@see java.lang.String#charAt(int)