             XCTAssertEqual(pdu.requestOpcode, .readByGroupTypeRequest)
         }
         
+        /// Characteristic Discovery
         do {
             
             let data: [UInt8] = [8, 1, 0, 6, 0, 3, 40]

            }
        }
        
        do {
            
            let data: [UInt8] = [8, 13, 0, 18, 0, 3, 40]

                XCTAssertEqual(characteristicDeclarationAttribute.attribute.value, attribute.value)
                XCTAssertEqual(characteristicDeclarationAttribute.uuid.rawValue, "94CAE5B0-3BDB-4B9B-9B34-8717C6CCFDAE")
                XCTAssertEqual(characteristicDeclarationAttribute.properties, [.write])
                XCTAssertEqual(characteristicDeclarationAttribute.valueHandle, 6)
            }
        }
        
        /// Characteristic Discovery
        do {
            
            let data: [UInt8] = [8, 7, 0, 12, 0, 3, 40]
