Starts a new completion with the specified SourceCompletionContext and a list of potential candidate providers for completion.
It can be convenient for showing a completion on-the-fly, without the need to add or remove providers to the SourceCompletion.
Another solution is to add providers with add_provider, and implement match for each provider.
| this | |
| providers |
a list of SourceCompletionProvider, or null. |
| context |
The SourceCompletionContext with which to start the completion. |
|
true if it was possible to the show completion window. |