https://openjdk.java.net/ 
public interface javax.activation.DataContentHandlerFactory
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.activation.DataContentHandlerFactory
  super_class: java.lang.Object
{
  public abstract javax.activation.DataContentHandler createDataContentHandler(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljavax/activation/DataContentHandler;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
          Name  Flags
      mimeType  
}
SourceFile: "DataContentHandlerFactory.java"