public T modifyModule(final String moduleName, final String slot, final byte[] existingHash, final byte[] newHash) {
        final ContentItem item = createModuleItem(moduleName, slot, newHash);
        addContentModification(createContentModification(item, ModificationType.MODIFY, existingHash));
        return returnThis();
    }
public T modifyModule ( final String moduleName , final String slot , final byte [ ] existingHash , final byte [ ] newHash ) { final ContentItem item = createModuleItem ( moduleName , slot , newHash ) ; addContentModification ( createContentModification ( item , ModificationType . MODIFY , existingHash ) ) ; return returnThis ( ) ; }
Modify a module.

@param moduleName the module name
@param slot the module slot
@param existingHash the existing hash
@param newHash the new hash of the modified content
@return the builder