@Override
    public StringExpression as(Path<String> alias) {
        return Expressions.stringOperation(Ops.ALIAS, mixin, alias);
    }
{@code StringExpression} represents {@link java.lang.String} expressions

@author tiwe
@see java.lang.String
querydsl-core/src/main/java/com/querydsl/core/types/dsl/StringExpression.java