fix header

Author: BewareMyPower

include/pulsar/EncryptionContext.h

@@ -53,12 +53,35 @@ class PULSAR_PUBLIC EncryptionContext {
     EncryptionContext(const proto::MessageMetadata& metadata, bool isDecryptionFailed);
 
     using KeysType = std::unordered_map<std::string, EncryptionKey>;
+
+    /**
+     * @return the map of encryption keys used for the message
+     */
     const KeysType& keys() const noexcept { return keys_; }
+
+    /**
+     * @return the encryption parameter used for the message
+     */
     const std::string& param() const noexcept { return param_; }
+
+    /**
+     * @return the encryption algorithm used for the message
+     */
     const std::string& algorithm() const noexcept { return algorithm_; }
+
+    /**
+     * @return the compression type used for the message
+     */
     CompressionType compressionType() const noexcept { return compressionType_; }
+
+    /**
+     * @return the uncompressed message size if the message is compressed, 0 otherwise
+     */
     uint32_t uncompressedMessageSize() const noexcept { return uncompressedMessageSize_; }
-    // Returns the batch size if the message is part of a batch, -1 otherwise
+
+    /**
+     * @return the batch size if the message is part of a batch, -1 otherwise
+     */
     int32_t batchSize() const noexcept { return batchSize_; }
 
     /**
@@ -71,11 +94,6 @@ class PULSAR_PUBLIC EncryptionContext {
      */
     bool isDecryptionFailed() const noexcept { return isDecryptionFailed_; }
 
-    static const EncryptionContext& empty() {
-        static EncryptionContext context;
-        return context;
-    }
-
    private:
     const KeysType keys_;
     const std::string param_;