Debug Adapter Protocol: Events do not have 'event' key

[fwcd]

A sample JSON event output from my debug adapter:

{"type":"event","seq":3,"command":"initialized","body":null}

The specification - however - requires an event key, instead of a command key:

interface Event extends ProtocolMessage {
  type: 'event';

  /**
   * Type of event.
   */
  event: string;

  /**
   * Event-specific information.
   */
  body?: any;
}

interface InitializedEvent extends Event {
  event: 'initialized';
}

See https://microsoft.github.io/debug-adapter-protocol/specification#Events_Initialized

Not sure if this is a version inconsistency related to #232

[fwcd]

I suppose this is the code snippet that needs to change:

https://github.com/eclipse/lsp4j/blob/cc1a2a7746d10f5cfe93a283e8acaf24090b7d31/org.eclipse.lsp4j.jsonrpc.debug/src/main/java/org/eclipse/lsp4j/jsonrpc/debug/adapters/DebugMessageTypeAdapter.java#L445-L459

...corresponding to:

https://github.com/eclipse/lsp4j/blob/cc1a2a7746d10f5cfe93a283e8acaf24090b7d31/org.eclipse.lsp4j.jsonrpc.debug/src/main/java/org/eclipse/lsp4j/jsonrpc/debug/adapters/DebugMessageTypeAdapter.java#L103-L106

[jonahgraham]

@fwcd fancy a pull request for this one?

[fwcd]

@jonahgraham Sure, I can create one

[fwcd]

@jonahgraham I have squashed and signed my commits, so they should be ready for merge.

[jonahgraham]

@fwcd Thanks for the fix!