public Builder setScheme(java.lang.String value) {
        if (value == null) {
          throw new NullPointerException();
        }
        scheme_ = value;
        bitField0_ |= 0x00000001;
        onChanged();
        return this;
      }
<pre>
Required. Specify the encryption scheme, supported schemes:
- `cenc` - AES-CTR subsample
- `cbcs`- AES-CBC subsample pattern
</pre>

<code>string scheme = 1 [(.google.api.field_behavior) = REQUIRED];</code>

@param value The scheme to set.
@return This builder for chaining.
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Encryption.java