Remove RequestBuilderBase.checkIfBodyAllowed, close AsyncHttpClient#455

Author: Stephane Landelle

src/main/java/com/ning/http/client/RequestBuilderBase.java

@@ -473,20 +473,12 @@ private void resetMultipartData() {
         request.parts = null;
     }
 
-    private void checkIfBodyAllowed() {
-        if ("HEAD".equals(request.method)) {
-            throw new IllegalArgumentException("Can NOT set Body on HTTP Request Method HEAD.");
-        }
-    }
-
     public T setBody(File file) {
-        checkIfBodyAllowed();
         request.file = file;
         return derived.cast(this);
     }
 
     public T setBody(byte[] data) throws IllegalArgumentException {
-        checkIfBodyAllowed();
         resetParameters();
         resetNonMultipartData();
         resetMultipartData();
@@ -495,7 +487,6 @@ public T setBody(byte[] data) throws IllegalArgumentException {
     }
 
     public T setBody(String data) throws IllegalArgumentException {
-        checkIfBodyAllowed();
         resetParameters();
         resetNonMultipartData();
         resetMultipartData();
@@ -504,7 +495,6 @@ public T setBody(String data) throws IllegalArgumentException {
     }
 
     public T setBody(InputStream stream) throws IllegalArgumentException {
-        checkIfBodyAllowed();
         resetParameters();
         resetNonMultipartData();
         resetMultipartData();
@@ -517,7 +507,6 @@ public T setBody(EntityWriter dataWriter) {
     }
 
     public T setBody(EntityWriter dataWriter, long length) throws IllegalArgumentException {
-        checkIfBodyAllowed();
         resetParameters();
         resetNonMultipartData();
         resetMultipartData();
@@ -527,7 +516,6 @@ public T setBody(EntityWriter dataWriter, long length) throws IllegalArgumentExc
     }
 
     public T setBody(BodyGenerator bodyGenerator) {
-        checkIfBodyAllowed();
         request.bodyGenerator = bodyGenerator;
         return derived.cast(this);
     }