https://tomcat.apache.org/: Tomcat Servlet Engine Core Classes and Standard implementations 
public class org.apache.naming.factory.MailSessionFactory implements javax.naming.spi.ObjectFactory
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.naming.factory.MailSessionFactory
  super_class: java.lang.Object
{
  protected static final java.lang.String factoryType;
    descriptor: Ljava/lang/String;
    flags: (0x001c) ACC_PROTECTED, ACC_STATIC, ACC_FINAL
    ConstantValue: "jakarta.mail.Session"

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.naming.factory.MailSessionFactory this
         0: .line 32
            new java.lang.Error
            dup
            ldc "Unresolved compilation problems: \n\tThe import jakarta.mail cannot be resolved\n\tThe import jakarta.mail cannot be resolved\n\tThe import jakarta.mail cannot be resolved\n\tThe method doPrivileged(PrivilegedAction<Session>) from the type AccessController refers to the missing type Session\n\tSession cannot be resolved to a type\n\tThis lambda expression refers to the missing type Session\n\tAuthenticator cannot be resolved to a type\n\tPasswordAuthentication cannot be resolved to a type\n\tPasswordAuthentication cannot be resolved to a type\n\tAuthenticator cannot be resolved to a type\n\tPasswordAuthentication cannot be resolved to a type\n\tThe method getPasswordAuthentication() of type new Authenticator(){} must override or implement a supertype method\n\tSession cannot be resolved to a type\n\tSession cannot be resolved\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // org.apache.naming.factory.MailSessionFactory this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/naming/factory/MailSessionFactory;

  public  getObjectInstance(, javax.naming.Name, javax.naming.Context, java.util.Hashtable<?, ?>);
    descriptor: (Ljava/lang/Object;Ljavax/naming/Name;Ljavax/naming/Context;Ljava/util/Hashtable;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=5, args_size=5
        start local 0 // org.apache.naming.factory.MailSessionFactory this
         0: .line 105
            new java.lang.Error
            dup
            ldc "Unresolved compilation problems: \n\tThe method doPrivileged(PrivilegedAction<Session>) from the type AccessController refers to the missing type Session\n\tSession cannot be resolved to a type\n\tThis lambda expression refers to the missing type Session\n\tAuthenticator cannot be resolved to a type\n\tPasswordAuthentication cannot be resolved to a type\n\tPasswordAuthentication cannot be resolved to a type\n\tAuthenticator cannot be resolved to a type\n\tPasswordAuthentication cannot be resolved to a type\n\tThe method getPasswordAuthentication() of type new Authenticator(){} must override or implement a supertype method\n\tSession cannot be resolved to a type\n\tSession cannot be resolved\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // org.apache.naming.factory.MailSessionFactory this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/naming/factory/MailSessionFactory;
    Exceptions:
      throws java.lang.Exception
    Signature: (Ljava/lang/Object;Ljavax/naming/Name;Ljavax/naming/Context;Ljava/util/Hashtable<**>;)Ljava/lang/Object;
    MethodParameters:
         Name  Flags
      refObj   
      name     
      context  
      env      
}
SourceFile: "MailSessionFactory.java"
NestMembers:
  org.apache.naming.factory.MailSessionFactory$1