Autoinsert single required proerty after '- '.

headless-services/concourse-language-server/src/main/java/org/springframework/ide/vscode/concourse/ConcourseModel.java

@@ -102,16 +102,13 @@ public class ConcourseModel {
 	 * Get the job with given name. If there is no such job, or if there is more than one, this will return null.
 	 */
 	private JobModel getJob(IDocument doc, String jobName) {
-		List<JobModel> jobs = getFromAst(doc, ast ->
-			JOBS_PATH.traverseAmbiguously(ast)
-			.filter(node -> jobName.equals(NodeUtil.getScalarProperty(node, "name")))
-			.map(JobModel::new)
-		)
-		.limit(2) //We only need 2 elements at most to determine if there is more than one
-		.collect(Collectors.toList());
-		return jobs.size()==1
-				? jobs.get(0)
-				: null;
+		return Streams.getSingle(
+			 getFromAst(doc, ast ->
+				JOBS_PATH.traverseAmbiguously(ast)
+				.filter(node -> jobName.equals(NodeUtil.getScalarProperty(node, "name")))
+				.map(JobModel::new)
+			)
+		);
 	}
 
 	public StepModel newStep(Node _node) {

headless-services/concourse-language-server/src/test/java/org/springframework/ide/vscode/concourse/ConcourseEditorTest.java

@@ -452,7 +452,7 @@ public class ConcourseEditorTest {
 		editor = harness.newEditor(CURSOR);
 		editor.assertCompletions(
 				"groups:\n" +
-				"- <*>"
+				"- name: <*>"
 				, // --------------
 				"jobs:\n" +
 				"- <*>"
@@ -2552,10 +2552,10 @@ public class ConcourseEditorTest {
 				"  <*>"
 				,
 				"inputs:\n" +
-				"- <*>"
+				"- name: <*>"
 				,
 				"outputs:\n" +
-				"- <*>"
+				"- name: <*>"
 				,
 				"params:\n" +
 				"  <*>"