phan reports Type Mismatch - hope I fixed it correctly

plugins/schemaorg/blogposting/src/Extension/Blogposting.php:55 PhanTypeMismatchReturn Returning $this->cleanupDate($schema, ['datePublished','dateModified']) of type bool but customCleanup() is declared to return array plugins/schemaorg/book/src/Extension/Book.php:55 PhanTypeMismatchReturn Returning $this->cleanupDate($schema, ['datePublished']) of type bool but customCleanup() is declared to return array plugins/schemaorg/event/src/Extension/Event.php:55 PhanTypeMismatchReturn Returning $this->cleanupDate($schema, ['startDate']) of type bool but customCleanup() is declared to return array plugins/schemaorg/jobposting/src/Extension/JobPosting.php:57 PhanTypeMismatchReturn Returning $schema of type bool but customCleanup() is declared to return array plugins/schemaorg/recipe/src/Extension/Recipe.php:61 PhanTypeMismatchReturn Returning $schema of type bool but customCleanup() is declared to return array