not always a blob, for example it could be a tree.

src/main/java/org/kohsuke/github/GHTreeEntry.java

@@ -46,7 +46,7 @@ public class GHTreeEntry {
 
     /**
      * Gets the type such as:
-     * "blob"
+     * "blob", "tree", etc.
      *
      * @return The type
      */
@@ -56,14 +56,14 @@ public class GHTreeEntry {
 
 
     /**
-     * SHA1 of this blob object.
+     * SHA1 of this object.
      */
     public String getSha() {
         return sha;
     }
 
     /**
-     * API URL to this Git blob data, such as
+     * API URL to this Git data, such as
      * https://api.github.com/repos/jenkinsci
      * /jenkins/git/commits/b72322675eb0114363a9a86e9ad5a170d1d07ac0
      */