useShortClassNames
Description
With the help of this configuration toggle it is possible to show only the class names in the diagram without the package name (full qualified). Because full qualified names increase the size of the diagram enormously the toggle is activated by default.
The parameter itself targets all class names in the diagram, even the return types of the method calls which can be shown by the show return types parameter.
Example
Here is an example from the JUnit tests using this configuration parameter:
// ARRANGE
PlantUMLSequenceDiagramConfigBuilder builder = new PlantUMLSequenceDiagramConfigBuilder(CallerA.class.getName(),
		"callSomething").withUseShortClassName(false); (1)
PlantUMLSequenceDiagramGenerator generator = new PlantUMLSequenceDiagramGenerator(builder.build());
String expectedDiagramText = IOUtils.toString(
		Objects.requireNonNull(classLoader.getResource("sequence/0001_basic_caller_with_long_class_names.txt")),
		StandardCharsets.UTF_8);
// ACT
String generatedDiagram = generator.generateDiagramText();
// ASSERT
assertAll(() -> assertNotNull(generatedDiagram), () -> assertEquals(expectedDiagramText.replaceAll("\\s+", ""),
		generatedDiagram.replaceAll("\\s+", "")));which is rendered this way:
 
and produces this PlantUML diagram text:
@startuml
participant de.elnarion.test.sequence.t0001.CallerA
participant de.elnarion.test.sequence.t0001.CallerB
activate de.elnarion.test.sequence.t0001.CallerA
	de.elnarion.test.sequence.t0001.CallerA -> de.elnarion.test.sequence.t0001.CallerB : callSomething
	activate de.elnarion.test.sequence.t0001.CallerB
		de.elnarion.test.sequence.t0001.CallerB -> de.elnarion.test.sequence.t0001.CallerB : privateMethodCall
		activate de.elnarion.test.sequence.t0001.CallerB
			de.elnarion.test.sequence.t0001.CallerB --> de.elnarion.test.sequence.t0001.CallerB
		deactivate de.elnarion.test.sequence.t0001.CallerB
		de.elnarion.test.sequence.t0001.CallerB -> de.elnarion.test.sequence.t0001.CallerB : protectedMethodCall
		activate de.elnarion.test.sequence.t0001.CallerB
			de.elnarion.test.sequence.t0001.CallerB --> de.elnarion.test.sequence.t0001.CallerB
		deactivate de.elnarion.test.sequence.t0001.CallerB
		de.elnarion.test.sequence.t0001.CallerB --> de.elnarion.test.sequence.t0001.CallerA
	deactivate de.elnarion.test.sequence.t0001.CallerB
	de.elnarion.test.sequence.t0001.CallerA -> de.elnarion.test.sequence.t0001.CallerB : callSomethingElse
	activate de.elnarion.test.sequence.t0001.CallerB
		de.elnarion.test.sequence.t0001.CallerB --> de.elnarion.test.sequence.t0001.CallerA
	deactivate de.elnarion.test.sequence.t0001.CallerB
deactivate de.elnarion.test.sequence.t0001.CallerA
@endumlWithout the parameter the diagram would look like this:
 
If used with an activated show return types toggle it looks like this:
