title: Facebook SDK for Unity Ambiguous Error
body: <p>am using unity 5.4.0p2 and am tring to use facebook sdk for unity version 7.8.0 
  but am getting this error when I imported the package : </p>
  
  <blockquote>
    <p>Assets/FacebookSDK/SDK/Scripts/Results/AppLinkResult.cs(51,43): error CS0121: </p>
    
    <p>The call is ambiguous between the following methods or properties:
    <code>Facebook.Unity.Utilities.TryGetValue&lt;System.Collections.Generic.IDictionary&lt;string,object&gt;&gt;(this System.Collections.Generic.IDictionary&lt;string,object&gt;, string, out System.Collections.Generic.IDictionary&lt;string,object&gt;)</code> </p>
    
    <p>and</p>
    
    <p><code>Facebook.Unity.Utilities.TryGetValue&lt;System.Collections.Generic.IDictionary&lt;string,object&gt;&gt;(this System.Collections.Generic.IDictionary&lt;string,object&gt;, string, out System.Collections.Generic.IDictionary&lt;string,object&gt;)</code></p>
  </blockquote>
  
  <p>I have done a lot of search but nothing helped me , so can someone explain what am doing wrong ? </p>