declare namespace org {
    namespace spongepowered {
        namespace api {
            namespace extra {
                namespace fluid {
                    namespace data {
                        namespace property {
                            // @ts-ignore
                             class FluidViscosityProperty extends org.spongepowered.api.data.property.IntProperty {
                                /**
                                 * Creates a new {@link FluidViscosityProperty} with the desired viscosity.
                                 */
                                constructor(value: number)
                                /**
                                 * Creates a new {@link FluidViscosityProperty} with the desired viscosity
                                 * and {@link org.spongepowered.api.data.Property.Operator} for comparisons.
                                 */
                                constructor(value: number, operator: org.spongepowered.api.data.Property.Operator)
                            }
                        }
                    }
                }
            }
        }
    }
}
