diff --git a/src/de/inetsoftware/jwebassembly/module/FunctionName.java b/src/de/inetsoftware/jwebassembly/module/FunctionName.java
index 866d661..a552ac8 100644
--- a/src/de/inetsoftware/jwebassembly/module/FunctionName.java
+++ b/src/de/inetsoftware/jwebassembly/module/FunctionName.java
@@ -28,6 +28,12 @@ import de.inetsoftware.classparser.Member;
  */
 public class FunctionName {
 
+    /**
+     * The Java class name.
+     */
+    @Nonnull
+    public final String className;
+
     /**
      * The name in the WebAssembly.
      */
@@ -40,6 +46,12 @@ public class FunctionName {
     @Nonnull
     public final String signatureName;
 
+    /**
+     * The signature
+     */
+    @Nonnull
+    public final String signature;
+
     /**
      * Create a new instance from the given reference in the ConstantPool or parsed method.
      * 
@@ -47,10 +59,36 @@ public class FunctionName {
      *            the Java method
      */
     FunctionName( @Nonnull Member methodOrField ) {
-        String methodName = methodOrField.getName();
-        String className = methodOrField.getClassName();
-        fullName = className + '.' + methodName;
-        signatureName = fullName + methodOrField.getType();
+        this( methodOrField, methodOrField.getType() );
+    }
+
+    /**
+     * Create a new instance from the given reference in the ConstantPool and a special signature.
+     * 
+     * @param methodOrField
+     *            the Java method
+     * @param signature
+     *            the Java signature
+     */
+    FunctionName( @Nonnull Member methodOrField, String signature ) {
+        this( methodOrField.getClassName(), methodOrField.getName(), signature );
+    }
+
+    /**
+     * Create a new instance from the given values
+     * 
+     * @param className
+     *            the Java class name
+     * @param methodName
+     *            the Java method name
+     * @param signature
+     *            the Java signature
+     */
+    FunctionName( String className, String methodName, String signature ) {
+        this.className = className;
+        this.fullName = className + '.' + methodName;
+        this.signatureName = fullName + signature;
+        this.signature = signature;
     }
 
     /**