improve reusability of PlantUMLBuilder

Author: lstreckeisen

src/language/generators/plantuml/ComponentDiagramGenerator.ts

@@ -33,7 +33,7 @@ export class ComponentDiagramGenerator implements PlantUMLDiagramGenerator<Conte
 
   createDiagram (node: ContextMap): string {
     if (node.boundedContexts.length === 0) {
-      this.plantUMLBuilder.addEmptyDiagramNote()
+      this.plantUMLBuilder.addEmptyDiagramNote('"Sorry, we cannot generate a component diagram. Your Context Map seems to be empty."')
       return this.plantUMLBuilder.build()
     }
 

src/language/generators/plantuml/PlantUMLBuilder.ts

@@ -9,8 +9,8 @@ export class PlantUMLBuilder {
     this._content.push(content)
   }
 
-  addEmptyDiagramNote () {
-    this.add('note "Sorry, we cannot generate a component diagram. Your Context Map seems to be empty." as EmptyDiagramError')
+  addEmptyDiagramNote (message: string) {
+    this.add(`note ${message} as EmptyDiagramError`)
     this.addLinebreak()
   }