/**  A description of a label. */
export interface LabelDescriptor {
    /**  The label key. */
    key?: string;
    /**  The type of data that can be assigned to the label. */
    valueType?: LabelDescriptor.ValueType | (keyof typeof LabelDescriptor.ValueType);
    /**  A human-readable description for the label. */
    description?: string;
}
export declare namespace LabelDescriptor {
    const name = "google.api.LabelDescriptor";
    /**  Value types that can be used as label values. */
    enum ValueType {
        /**  A variable-length string. This is the default. */
        STRING = 0,
        /**  Boolean; true or false. */
        BOOL = 1,
        /**  A 64-bit signed integer. */
        INT64 = 2
    }
    namespace ValueType {
        const name = "google.api.LabelDescriptor.ValueType";
    }
}
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