Fix statement mappings in isomorphic lambda expressions

JabRef/jabref#11430
src/main/java/org/jabref/preferences/JabRefPreferences.java
public AutoCompletePreferences getAutoCompletePreferences()

EasyBind.listen(autoCompletePreferences.nameFormatProperty(), (obs, oldValue, newValue) -> {
            if (autoCompletePreferences.getNameFormat() == AutoCompletePreferences.NameFormat.BOTH) {
                putBoolean(AUTOCOMPLETER_LAST_FIRST, false);
                putBoolean(AUTOCOMPLETER_FIRST_LAST, false);
            } else if (autoCompletePreferences.getNameFormat() == AutoCompletePreferences.NameFormat.LAST_FIRST) {
                putBoolean(AUTOCOMPLETER_LAST_FIRST, true);
                putBoolean(AUTOCOMPLETER_FIRST_LAST, false);
            } else {
                putBoolean(AUTOCOMPLETER_LAST_FIRST, false);
                putBoolean(AUTOCOMPLETER_FIRST_LAST, true);
            }
        });

src/main/java/gr/uom/java/xmi/decomposition/UMLOperationBodyMapper.java

@@ -114,6 +114,7 @@ public class UMLOperationBodyMapper implements Comparable<UMLOperationBodyMapper
 	private Set<Pair<VariableDeclaration, VariableDeclaration>> movedVariables;
 	private int callsToExtractedMethod = 0;
 	private boolean nested;
+	private boolean lambdaBodyMapper;
 	private AbstractCall operationInvocation;
 	private Map<String, String> parameterToArgumentMap1;
 	private Map<String, String> parameterToArgumentMap2;
@@ -1274,6 +1275,7 @@ else if(lambda1.getBody() != null && lambda2.getBody() != null) {
 				addMapping(mapping);
 			}
 			else {
+				this.lambdaBodyMapper = true;
 				processCompositeStatements(composite1.getLeaves(), composite2.getLeaves(), composite1.getInnerNodes(), composite2.getInnerNodes());
 			}
 		}
@@ -5307,7 +5309,7 @@ else if(isomorphic && (container1.hasTestAnnotation() || container1.getName().st
 								}
 							}
 						}
-						if(parentMapper != null && matchCount > 1) {
+						if(parentMapper != null && !this.lambdaBodyMapper && matchCount > 1) {
 							Pair<CompositeStatementObject, CompositeStatementObject> switchParentEntry = multipleMappingsUnderTheSameSwitch(mappingSet);
 							boolean identicalSwitch = false;
 							if(switchParentEntry != null) {
@@ -5686,7 +5688,7 @@ else if(splitToMultipleAssignments.size() > 1) {
 								}
 							}
 						}
-						if(parentMapper != null && matchCount > 1) {
+						if(parentMapper != null && !this.lambdaBodyMapper && matchCount > 1) {
 							Pair<CompositeStatementObject, CompositeStatementObject> switchParentEntry = multipleMappingsUnderTheSameSwitch(mappingSet);
 							boolean identicalSwitch = false;
 							if(switchParentEntry != null) {