andreid911 commented on code in PR #230:
URL: https://github.com/apache/mina-sshd/pull/230#discussion_r912164373


##########
sshd-core/src/main/java/org/apache/sshd/client/channel/ChannelSession.java:
##########
@@ -217,4 +223,42 @@ protected int securedRead(
             }
         }
     }
+
+    /**
+     * @param  key   The (never {@code null}) key (Note: may be empty...)
+     * @param  value The value to set - if {@code null} then the pre-existing 
value for the key (if any) is
+     *               <U>removed</U>.
+     * @return       The replaced/removed previous value - {@code null} if no 
previous value set for the key.
+     */
+    public Object setEnv(String key, Object value) {
+        ValidateUtils.checkNotNull(key, "No key provided");

Review Comment:
   According to the current javadoc: key can be empty string. I am not planning 
to make any constraints changes to avoid behavior changes. 
   @lgoldstein do you think we can change javadoc and update validation or use 
old validation without empty check?



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