Drop Invokable interface

src/main/java/org/codehaus/mojo/exec/ExecMojo.java

@@ -38,6 +38,7 @@
 import java.util.Properties;
 import java.util.Set;
 import java.util.TreeSet;
+import java.util.function.Consumer;
 import java.util.jar.JarEntry;
 import java.util.jar.JarOutputStream;
 import java.util.jar.Manifest;
@@ -434,7 +435,7 @@ else if (useMavenLogger)
                     getLog().debug("Will redirect program output to Maven logger");
                     final String parentThreadName = Thread.currentThread().getName();
                     final String logSuffix = "[" + parentThreadName + "] ";
-                    Invokable<String> mavenOutRedirect = new Invokable<String>()
+                    Consumer<String> mavenOutRedirect = new Consumer<String>()
                     {
 
                         @Override
@@ -450,7 +451,7 @@ public void accept(String logMessage)
                             }
                         }
                     };
-                    Invokable<String> mavenErrRedirect = new Invokable<String>()
+                    Consumer<String> mavenErrRedirect = new Consumer<String>()
                     {
 
                         @Override

src/main/java/org/codehaus/mojo/exec/LineRedirectOutputStream.java

@@ -20,10 +20,11 @@
  */
 
 import java.io.OutputStream;
+import java.util.function.Consumer;
 
 /**
  * An output stream that captures one line of output at a time, and then
- * redirects that line to some {@link Invokable} to act upon as it pleases. This
+ * redirects that line to some {@link Consumer} to act upon as it pleases. This
  * class is not thread safe and expects to have only one active writer consuming
  * it at any given time.
  * 
@@ -32,9 +33,9 @@
 class LineRedirectOutputStream extends OutputStream {
 
     private StringBuilder currentLine = new StringBuilder();
-    private final Invokable<String> linePrinter;
+    private final Consumer<String> linePrinter;
 
-    public LineRedirectOutputStream(Invokable<String> linePrinter) {
+    public LineRedirectOutputStream(Consumer<String> linePrinter) {
         this.linePrinter = linePrinter;
     }