public Builder removeDeviceDetails(java.lang.String key) {
            if (key == null) {
                throw new NullPointerException("map key");
            }
            internalGetMutableDeviceDetails().getMutableMap()
                    .remove(key);
            return this;
        }
<code>map&lt;string, string&gt; device_details = 6;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/request/user/CreateSessionRequest.java