declare namespace org {
    namespace spongepowered {
        namespace api {
            namespace extra {
                namespace fluid {
                    namespace data {
                        namespace manipulator {
                            namespace immutable {
                                // @ts-ignore
                                interface ImmutableFluidItemData extends org.spongepowered.api.data.manipulator.ImmutableDataManipulator {
                                    /**
                                     * Gets the {@link ImmutableValue} of the {@link FluidStackSnapshot}.
                                     */
                                    // @ts-ignore
                                     fluid(): org.spongepowered.api.data.value.immutable.ImmutableValue;
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
