src/Composer/Repository/Vcs/BitbucketDriver.php
public function getFileContent($file, $identifier)
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getFileContent($file, $identifier);
        }

        if (strpos($identifier, '/') !== false) {
            $branches = $this->getBranches();
            if (isset($branches[$identifier])) {
                $identifier = $branches[$identifier];
            }
        }

        $resource = sprintf(
            'https://api.bitbucket.org/2.0/repositories/%s/%s/src/%s/%s',
            $this->owner,
            $this->repository,
            $identifier,
            $file
        );

        return $this->getContentsWithOAuthCredentials($resource);
    }
public function getFileContent($file, $identifier)
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getFileContent($file, $identifier);
        }

        if (strpos($identifier, '/') !== false) {
            $branches = $this->getBranches();
            if (isset($branches[$identifier])) {
                $identifier = $branches[$identifier];
            }
        }

        $resource = sprintf(
            'https://api.bitbucket.org/2.0/repositories/%s/%s/src/%s/%s',
            $this->owner,
            $this->repository,
            $identifier,
            $file
        );

        return $this->getContentsWithOAuthCredentials($resource);
    }
{@inheritdoc}