Remove unused MethodMetadata#getMethodReturnType

Introduced to support checking return types on @Bean methods but never
actually used.  May be reintroduced as necessary in the future.

org.springframework.core/src/main/java/org/springframework/core/type/MethodMetadata.java

@@ -36,11 +36,6 @@ public interface MethodMetadata {
 	 */
 	String getMethodName();
 
-	/**
-	 * Return the fully-qualified name of the return type of the method.
-	 */
-	String getMethodReturnType();
-
 	/**
 	 * Return the fully-qualified name of the class that declares this method.
 	 */

org.springframework.core/src/main/java/org/springframework/core/type/StandardMethodMetadata.java

@@ -58,11 +58,7 @@ public class StandardMethodMetadata implements MethodMetadata {
 	public String getMethodName() {
 		return this.introspectedMethod.getName();
 	}
-
-	public String getMethodReturnType() {
-		return this.introspectedMethod.getReturnType().getName();
-	}
-
+	
 	public String getDeclaringClassName() {
 		return this.introspectedMethod.getDeclaringClass().getName();
 	}

org.springframework.core/src/main/java/org/springframework/core/type/classreading/AnnotationMetadataReadingVisitor.java

@@ -62,7 +62,7 @@ final class AnnotationMetadataReadingVisitor extends ClassMetadataReadingVisitor
 
 	@Override
 	public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
-		return new MethodMetadataReadingVisitor(name, getReturnTypeFromAsmMethodDescriptor(desc), access, this.getClassName(), this.classLoader, this.methodMetadataMap);
+		return new MethodMetadataReadingVisitor(name, access, this.getClassName(), this.classLoader, this.methodMetadataMap);
 	}
 
 	@Override
@@ -160,47 +160,4 @@ final class AnnotationMetadataReadingVisitor extends ClassMetadataReadingVisitor
 		annotatedMethods.addAll(list);
 		return annotatedMethods;
 	}
-
-	/**
-	 * Convert a type descriptor to a classname suitable for classloading with
-	 * Class.forName().
-	 * 
-	 * @param typeDescriptor see ASM guide section 2.1.3
-	 */
-	private static String convertAsmTypeDescriptorToClassName(String typeDescriptor) {
-		final String internalName; // See ASM guide section 2.1.2
-
-		if ("V".equals(typeDescriptor))
-			return Void.class.getName();
-		if ("I".equals(typeDescriptor))
-			return Integer.class.getName();
-		if ("Z".equals(typeDescriptor))
-			return Boolean.class.getName();
-
-		// strip the leading array/object/primitive identifier
-		if (typeDescriptor.startsWith("[["))
-			internalName = typeDescriptor.substring(3);
-		else if (typeDescriptor.startsWith("["))
-			internalName = typeDescriptor.substring(2);
-		else
-			internalName = typeDescriptor.substring(1);
-
-		// convert slashes to dots
-		String className = internalName.replace('/', '.');
-
-		// and strip trailing semicolon (if present)
-		if (className.endsWith(";"))
-			className = className.substring(0, internalName.length() - 1);
-
-		return className;
-	}
-
-	/**
-	 * @param methodDescriptor see ASM guide section 2.1.4
-	 */
-	private static String getReturnTypeFromAsmMethodDescriptor(String methodDescriptor) {
-		String returnTypeDescriptor = methodDescriptor.substring(methodDescriptor.indexOf(')') + 1);
-		return convertAsmTypeDescriptorToClassName(returnTypeDescriptor);
-	}
-
 }

org.springframework.core/src/main/java/org/springframework/core/type/classreading/MethodMetadataReadingVisitor.java

@@ -43,8 +43,6 @@ final class MethodMetadataReadingVisitor extends MethodAdapter implements Method
 
 	private final int access;
 
-	private String returnType;
-
 	private String declaringClassName;
 
 	private final ClassLoader classLoader;
@@ -53,11 +51,10 @@ final class MethodMetadataReadingVisitor extends MethodAdapter implements Method
 
 	private final Map<String, Map<String, Object>> attributeMap = new LinkedHashMap<String, Map<String, Object>>(2);
 
-	public MethodMetadataReadingVisitor(String name, String returnType, int access, String declaringClassName, ClassLoader classLoader,
+	public MethodMetadataReadingVisitor(String name, int access, String declaringClassName, ClassLoader classLoader,
 			MultiValueMap<String, MethodMetadata> methodMetadataMap) {
 		super(new EmptyVisitor());
 		this.name = name;
-		this.returnType = returnType;
 		this.access = access;
 		this.declaringClassName = declaringClassName;
 		this.classLoader = classLoader;
@@ -75,10 +72,6 @@ final class MethodMetadataReadingVisitor extends MethodAdapter implements Method
 		return this.name;
 	}
 
-	public String getMethodReturnType() {
-		return this.returnType;
-	}
-
 	public boolean isStatic() {
 		return ((this.access & Opcodes.ACC_STATIC) != 0);
 	}