public NumberExpression<Integer> locate(Expression<String> str) {
        return Expressions.numberOperation(Integer.class, Ops.StringOps.LOCATE, str, mixin);
    }
Create a {@code locate(str, this)} expression

<p>Get the position of the given String in this String, the first position is 1</p>

@param str string
@return locate(str, this)
querydsl-core/src/main/java/com/querydsl/core/types/dsl/StringExpression.java