Find a boolean attribute in the builder that has the type attr_type, is of the correct boolean size, and is not invalid in
the PKCS#11 sense.
If multiple attributes exist for the given attribute type, then the first\ one is returned.
| this |
the builder |
| attr_type |
the type of attribute to find |
| value |
the location to place the found value |
|
whether a valid boolean attribute was found |