src/Primitive/Support/Traits/RetrievableTrait.php
protected function boolFromString($value)
    {
        $grammar = $this->getGrammar();

        $value = $this->getStringable($value);

        if (isset($grammar[$value])) return $grammar[$value];

        return false;
    }
protected function boolFromString($value)
    {
        $grammar = $this->getGrammar();

        $value = $this->getStringable($value);

        if (isset($grammar[$value])) return $grammar[$value];

        return false;
    }
Construct proper Bool from string using grammar.

@param mixed $value
@return bool