Mark the individual environment classes as internal.

Author: davereid

src/Acquia.php

@@ -11,6 +11,8 @@
  * @todo Add isPreview() support.
  * @todo Should the 'ide' environment be detected as local?
  * @todo Add support for https://docs.acquia.com/ra/environment.html
+ *
+ * @internal
  */
 class Acquia extends DefaultEnvironment
 {

src/CircleCi.php

@@ -6,6 +6,8 @@
  * The CircleCI environment specifics.
  *
  * @see https://circleci.com/docs/variables/
+ *
+ * @internal
  */
 class CircleCi extends DefaultEnvironment
 {

src/DefaultEnvironment.php

@@ -4,6 +4,8 @@
 
 /**
  * The standard environment.
+ *
+ * @internal
  */
 class DefaultEnvironment
 {

src/GitHubWorkflow.php

@@ -6,6 +6,8 @@
  * The GitHub Workflow environment specifics.
  *
  * @see https://docs.github.com/en/actions/learn-github-actions/variables
+ *
+ * @internal
  */
 class GitHubWorkflow extends DefaultEnvironment
 {

src/GitLabCi.php

@@ -6,6 +6,8 @@
  * The GitlabCi environment specifics.
  *
  * @see https://docs.gitlab.com/ee/ci/variables/predefined_variables.html
+ *
+ * @internal
  */
 class GitLabCi extends DefaultEnvironment
 {

src/Pantheon.php

@@ -7,6 +7,8 @@
  *
  * @see https://docs.pantheon.io/pantheon-workflow
  * @see https://docs.pantheon.io/guides/multidev
+ *
+ * @internal
  */
 class Pantheon extends DefaultEnvironment
 {

src/Tugboat.php

@@ -6,6 +6,8 @@
  * The Tugboat environment specifics.
  *
  * @see https://docs.tugboatqa.com/reference/environment-variables/
+ *
+ * @internal
  */
 class Tugboat extends DefaultEnvironment
 {