Custom method on extended classes are flagged as undefined.

[Beakerboy]

How is drupal-check installed?

• drupal-check is installed using the phar
• drupal-check is installed globally via Composer
• drupal-check is installed globally using consolidation/cgr
• drupal-check is installed as a dependency to my project

Environment:

• OS: Linux
• PHP Version: 7.3
• Drupal core: 8.8.x

Describe the bug
Drupal-check flags every call to a custom method as undefined.

Console output
Paste the output of the console when running the command with -vvv
https://travis-ci.org/github/Beakerboy/sqlsrv/builds/671039483

[Beakerboy]

Some of the “method not found” errors originate from prophecy objects. I installed jangregor/phpstan-prophecy and phpstan/extension-installer, but then get the error:

- /home/travis/build/Beakerboy/drupal-project/vendor/phpstan/phpstan-deprecation-rules/rules.neon
- /home/travis/build/Beakerboy/drupal-project/vendor/mglaman/phpstan-drupal/extension.neon

It can lead to unexpected results. If you're using phpstan/extension-installer, make sure you have removed corresponding neon files from your project config file.

I have no neon file, and I do not see one in your project repository either.

[Beakerboy]

It looks like many of the errors are due to limitations in the way the core doc blocks are used. The function Connection::schema() will always return a child of \Drupal\Core\Database\Schema, not this particular “abstract for all intents and purposes” class.

If I break the following statement

$result = $this->connection->schema()->customFunction();

Into

/** @var \Drupal\Driver\Database\module\Schema $schema */
$schema = $this->connection->schema();
$result = $schema->customFunction();

Then the error goes away. If you think this is the expected behavior, feel free to close it. Prophecy is still an issue though.