proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildOptions.java
public Builder clearDiskSizeGb() {

      diskSizeGb_ = 0L;
      onChanged();
      return this;
    }
/**
     *
     *
     * <pre>
     * Requested disk size for the VM that runs the build. Note that this is *NOT*
     * "disk free"; some of the space will be used by the operating system and
     * build utilities. Also note that this is the minimum disk size that will be
     * allocated for the build -- the build may run with a larger disk than
     * requested. At present, the maximum disk size is 1000GB; builds that request
     * more than the maximum are rejected with an error.
     * </pre>
     *
     * <code>int64 disk_size_gb = 6;</code>
     *
     * @return This builder for chaining.
     */

Requested disk size for the VM that runs the build. Note that this is *NOT
"disk free"; some of the space will be used by the operating system and
build utilities. Also note that this is the minimum disk size that will be
allocated for the build -- the build may run with a larger disk than
requested. At present, the maximum disk size is 1000GB; builds that request
more than the maximum are rejected with an error.

int64 disk_size_gb = 6.

@return This builder for chaining.
Requested disk size for the VM that runs the build . Note that this is * NOT " disk free " ; some of the space will be used by the operating system and build utilities . Also note that this is the minimum disk size that will be allocated for the build -- the build may run with a larger disk than requested . At present the maximum disk size is 1000GB ; builds that request more than the maximum are rejected with an error . int64 disk_size_gb = 6 . @return This builder for chaining .
public Builder clearDiskSizeGb() {
      diskSizeGb_ = 0L;
      onChanged();
      return this;
    }
public Builder clearDiskSizeGb ( ) { diskSizeGb_ = 0L ; onChanged ( ) ; return this ; }
<pre>
 Requested disk size for the VM that runs the build.
<pre > Requested disk size for the VM that runs the build .