remove warnings as unused imports and so one

src/main/java/org/rosi_project/model_sync/model_join/representation/grammar/KeepCalculatedExpression.java

@@ -2,7 +2,6 @@ package org.rosi_project.model_sync.model_join.representation.grammar;
 
 import java.util.Objects;
 import javax.annotation.Nonnull;
-import org.rosi_project.model_sync.model_join.representation.core.AttributePath;
 import org.rosi_project.model_sync.model_join.representation.core.OCLStatement;
 import org.rosi_project.model_sync.model_join.representation.core.TypedAttributePath;
 

src/main/java/org/rosi_project/model_sync/model_join/representation/parser/legacy/DefaultModelJoinParser.java

@@ -9,7 +9,6 @@ import java.util.Optional;
 import java.util.regex.Pattern;
 import javax.annotation.Nonnull;
 import org.rosi_project.model_sync.model_join.representation.grammar.ModelJoinExpression;
-import org.rosi_project.model_sync.model_join.representation.parser.ModelJoinParser;
 import org.rosi_project.model_sync.model_join.representation.parser.ModelJoinParsingException;
 import org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder;
 

src/main/java/org/rosi_project/model_sync/model_join/representation/util/Functional.java

@@ -6,7 +6,6 @@ import java.util.Optional;
 import java.util.function.Function;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
-import javax.swing.text.html.Option;
 
 /**
  * Contains a number of useful classes to mimic behaviour from functional programming languages in

src/main/java/org/rosi_project/model_sync/modelrepresentation/ModelJoinCreation.java

@@ -3,7 +3,6 @@ package org.rosi_project.model_sync.modelrepresentation;
 import static org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder.attributes;
 import static org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder.outgoing;
 import static org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder.supertype;
-import static org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder.thetaJoin;
 import static org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder.naturalJoin;
 
 import java.io.File;
@@ -17,37 +16,10 @@ import org.rosi_project.model_sync.model_join.representation.writer.*;
 public class ModelJoinCreation {
 
 	public static void main(String[] args) {		
-		/*ClassResource person = ClassResource.fromQualifiedName("contact.Person");
-		ClassResource employee = ClassResource.fromQualifiedName("company.Employee");
-		AttributePath dateOfBirth = AttributePath.from(person, "dateOfBirth");
-
-		ModelJoinExpression mj = ModelJoinBuilder.createNewModelJoin()
-		  .add(JoinFactory.createNew()
-		    .natural()
-		    .join(person)
-		    .with(employee)
-		    .as(ClassResource.fromQualifiedName("unified.Person"))
-		    .keep(KeepAttributesExpression
-		      .keepAttributes(dateOfBirth))
-		    .done()
-		  ).build();
-		System.out.println(mj);
-		for (JoinExpression j: mj.getJoins()) {
-			System.out.println(j);
-			for (KeepExpression k: j.getKeeps()) {
-				System.out.println(k);
-			}
-		}*/
-		
 		
 		ClassResource library = ClassResource.from("lib", "Library");
 	    ClassResource employee = ClassResource.from("lib", "Employee");
 	    ClassResource person = ClassResource.from("lib", "Person");
-	    //ClassResource.fromQualifiedName("lib.Library");
-	    
-	    //ClassResource jointargetMovie = ClassResource.from("jointarget", "Movie");
-	    //ClassResource jointargetVote = ClassResource.from("jointarget", "Vote");
-	    //ClassResource jointargetMediaItem = ClassResource.from("jointarget", "MediaItem");
 
 	    AttributePath libraryName = AttributePath.from(library, "name");
 	    AttributePath libraryEmployees = AttributePath.from(library, "employees");
@@ -118,7 +90,6 @@ public class ModelJoinCreation {
 		File fileComplete = new File("libraryComplete.modeljoin");
 		File fileSimple = new File("librarySimple.modeljoin");
 		File fileManager = new File("manager.modeljoin");
-	    //registerCreatedFile(outputFile);
 
 	    FileBasedModelJoinWriter writerComplete = new FileBasedModelJoinWriter(fileComplete);
 	    writerComplete.write(mjComplete);

src/test/java/org/rosi_project/model_sync/model_join/representation/writer/TestedModels.java

@@ -4,15 +4,9 @@ import static org.rosi_project.model_sync.model_join.representation.util.ModelJo
 import static org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder.outgoing;
 import static org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder.supertype;
 import static org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder.thetaJoin;
-import static org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder.naturalJoin;
-
-import org.rosi_project.model_sync.model_join.representation.grammar.KeepAttributesExpression;
-import org.rosi_project.model_sync.model_join.representation.grammar.KeepExpression;
 import org.rosi_project.model_sync.model_join.representation.core.AttributePath;
 import org.rosi_project.model_sync.model_join.representation.core.ClassResource;
 import org.rosi_project.model_sync.model_join.representation.grammar.ModelJoinExpression;
-import org.rosi_project.model_sync.model_join.representation.util.JoinFactory.ThetaJoinBuilder;
-import org.rosi_project.model_sync.model_join.representation.util.JoinFactory;
 import org.rosi_project.model_sync.model_join.representation.util.ModelJoinBuilder;
 
 class TestedModels {