deprecate setter for company sessions

Author: dehora

intercom-java/src/main/java/io/intercom/api/Company.java

@@ -252,8 +252,16 @@ public int getSessionCount() {
         return sessionCount;
     }
 
+    /**
+     * Deprecated. The Intercom API does not support changing the
+     * session value for a company. Calling this method has no
+     * effect.
+     *
+     * @param sessionCount this value is ignored
+     * @return the company object
+     */
+    @Deprecated
     public Company setSessionCount(int sessionCount) {
-        this.sessionCount = sessionCount;
         return this;
     }