DI\Definition\Source\DefinitionArray::getDefinition PHP Method

    public function getDefinition($name)
    {
        // Look for the definition by name
        if (array_key_exists($name, $this->definitions)) {
            return $this->castDefinition($this->definitions[$name], $name);
        }
        // Build the cache of wildcard definitions
        if ($this->wildcardDefinitions === null) {
            $this->wildcardDefinitions = [];
            foreach ($this->definitions as $key => $definition) {
                if (strpos($key, self::WILDCARD) !== false) {
                    $this->wildcardDefinitions[$key] = $definition;
                }
            }
        }
        // Look in wildcards definitions
        foreach ($this->wildcardDefinitions as $key => $definition) {
            // Turn the pattern into a regex
            $key = preg_quote($key);
            $key = '#' . str_replace('\\' . self::WILDCARD, self::WILDCARD_PATTERN, $key) . '#';
            if (preg_match($key, $name, $matches) === 1) {
                $definition = $this->castDefinition($definition, $name);
                // For a class definition, we replace * in the class name with the matches
                // *Interface -> *Impl => FooInterface -> FooImpl
                if ($definition instanceof ObjectDefinition) {
                    array_shift($matches);
                    $definition->setClassName($this->replaceWildcards($definition->getClassName(), $matches));
                }
                return $definition;
            }
        }
        return null;
    }

 /**
  * {@inheritdoc}
  */
 public function getDefinition($name)
 {
     $this->initialize();
     return parent::getDefinition($name);
 }