oolean.
This value type can be used only if the metric kind is <code>GAUGE</code>.</p></td></tr><tr id=google-api-MetricDescriptor-ValueType-INT64><td><code>INT64</code></td><td><p>The value is a signed 64-bit integer.</p></td></tr><tr id=google-api-MetricDescriptor-ValueType-DOUBLE><td><code>DOUBLE</code></td><td><p>The value is a double precision floating point number.</p></td></tr><tr id=google-api-MetricDescriptor-ValueType-STRING><td><code>STRING</code></td><td><p>The value is a text string.
This value