s its token
            value, unless it has been defined using the <code class="computeroutput"><span class="identifier">omit</span></code>
            token value type. This iterator range then is converted in place to the
            requested token value type (attribute) when it is requested for the first
            time.
          </p>
<h6>
<a name="spirit.lex.abstracts.lexer_primitives.lexer_token_values.h1"></a>
            <span class="phrase"><a name="spirit.lex.abstracts.lexer_primitives.lexer_to