AnnotationException: [Semantical Error] The annotation "@SymfonyComponentValidatorConstraintsPassword" in property NMSPMyBundleEntityUser::$password does not exist, or could not be auto-loaded.

//annotation declaration:
/**
 * @ORMColumn(type="string", length="32", unique="true")
 *
 * @AssertMinLength(3)
 * @AssertPassword2()
 */
protected $password;

//load files with the following in the code
services:
  validator.password:
    class: NMSPMyBundleValidatorPasswordValidator
    tags:
        - { name: validator.constraint_validator, alias: password }

use NMSPMyBundleValidator as NMSPAssert;

@NMSPAssertPassword()