public Builder clearMimeType() {
      mimeType_ = getDefaultInstance().getMimeType();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }
<pre>
Optional. Can be "text/plain" or "text/html".
For `.tsv`, "text/html" is used if mime_type is missing.
For `.html`, this field must be "text/html" or empty.
For `.txt`, this field must be "text/plain" or empty.
</pre>

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

@return This builder for chaining.
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/InputConfig.java