add display method interface

Author: infeo

src/main/java/org/cryptomator/integrations/common/DisplayName.java

@@ -0,0 +1,21 @@
+package org.cryptomator.integrations.common;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.jetbrains.annotations.ApiStatus;
+
+/**
+ * A humanreadable name of the annotated class.
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+@ApiStatus.Experimental
+public @interface DisplayName {
+	String value();
+    
+}

src/main/java/org/cryptomator/integrations/common/NamedServiceProvider.java

@@ -0,0 +1,24 @@
+package org.cryptomator.integrations.common;
+
+/**
+ * A service provider with a specific, human-readable name.
+ * 
+ */
+public interface NamedServiceProvider {
+    
+    /**
+     * Get the name of this service provider.
+     * @implNote The default implementation looks for the {@link DisplayName} annotation and uses its value. If the annotation is not present, it falls back to the qualified class name.
+     * @return The name of the service provider
+     * 
+     * @see DisplayName
+     */
+    default public String getName() {
+        var displayName = this.getClass().getAnnotation(DisplayName.class);
+        if(displayName != null) {
+            return displayName.value();
+        } else {
+            return this.getClass().getName();
+        }
+    }
+}