@java.lang.Override
  public Builder toBuilder() {
    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
  }
<pre>
The type of the file. Currently only "application/pdf", "image/tiff" and
"image/gif" are supported. Wildcards are not supported.
</pre>

<code>string mime_type = 2;</code>

@return The bytes for mimeType.
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/InputConfig.java