Add missing javadoc interface descriptions for the various FuncN variants (#1843)

Author: DavidMGross

src/main/java/rx/functions/Func0.java

@@ -17,6 +17,9 @@
 
 import java.util.concurrent.Callable;
 
+/**
+ * Represents a function with zero arguments.
+ */
 public interface Func0<R> extends Function, Callable<R> {
     @Override
     public R call();

src/main/java/rx/functions/Func1.java

@@ -15,6 +15,9 @@
  */
 package rx.functions;
 
+/**
+ * Represents a function with one argument.
+ */
 public interface Func1<T1, R> extends Function {
     public R call(T1 t1);
-}
+}

src/main/java/rx/functions/Func2.java

@@ -15,6 +15,9 @@
  */
 package rx.functions;
 
+/**
+ * Represents a function with two arguments.
+ */
 public interface Func2<T1, T2, R> extends Function {
     public R call(T1 t1, T2 t2);
-}
+}

src/main/java/rx/functions/Func3.java

@@ -15,6 +15,9 @@
  */
 package rx.functions;
 
+/**
+ * Represents a function with three arguments.
+ */
 public interface Func3<T1, T2, T3, R> extends Function {
     public R call(T1 t1, T2 t2, T3 t3);
-}
+}

src/main/java/rx/functions/Func4.java

@@ -15,6 +15,9 @@
  */
 package rx.functions;
 
+/**
+ * Represents a function with four arguments.
+ */
 public interface Func4<T1, T2, T3, T4, R> extends Function {
     public R call(T1 t1, T2 t2, T3 t3, T4 t4);
-}
+}

src/main/java/rx/functions/Func5.java

@@ -15,6 +15,9 @@
  */
 package rx.functions;
 
+/**
+ * Represents a function with five arguments.
+ */
 public interface Func5<T1, T2, T3, T4, T5, R> extends Function {
     public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5);
-}
+}

src/main/java/rx/functions/Func6.java

@@ -15,6 +15,9 @@
  */
 package rx.functions;
 
+/**
+ * Represents a function with six arguments.
+ */
 public interface Func6<T1, T2, T3, T4, T5, T6, R> extends Function {
     public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6);
-}
+}

src/main/java/rx/functions/Func7.java

@@ -15,6 +15,9 @@
  */
 package rx.functions;
 
+/**
+ * Represents a function with seven arguments.
+ */
 public interface Func7<T1, T2, T3, T4, T5, T6, T7, R> extends Function {
     public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6, T7 t7);
-}
+}

src/main/java/rx/functions/Func8.java

@@ -15,6 +15,9 @@
  */
 package rx.functions;
 
+/**
+ * Represents a function with eight arguments.
+ */
 public interface Func8<T1, T2, T3, T4, T5, T6, T7, T8, R> extends Function {
     public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6, T7 t7, T8 t8);
-}
+}

src/main/java/rx/functions/Func9.java

@@ -15,6 +15,9 @@
  */
 package rx.functions;
 
+/**
+ * Represents a function with nine arguments.
+ */
 public interface Func9<T1, T2, T3, T4, T5, T6, T7, T8, T9, R> extends Function {
     public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6, T7 t7, T8 t8, T9 t9);
-}
+}