http://www.jooq.org/jooq: jOOQ effectively combines complex SQL, typesafety, source code generation, active records, stored procedures, advanced data types, and Java in a fluent, intuitive DSL. 
public interface org.jooq.ConnectionProvider
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.jooq.ConnectionProvider
  super_class: java.lang.Object
{
  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 45
            new java.lang.Error
            dup
            ldc "Unresolved compilation problems: \n\tThe import org.jetbrains cannot be resolved\n\tNullable cannot be resolved to a type\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public abstract java.sql.Connection acquire();
    descriptor: ()Ljava/sql/Connection;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws org.jooq.exception.DataAccessException
    RuntimeInvisibleAnnotations: 
      Nullable()
    RuntimeInvisibleTypeAnnotations: 
      METHOD_RETURN
        Nullable()

  public abstract void release(java.sql.Connection);
    descriptor: (Ljava/sql/Connection;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws org.jooq.exception.DataAccessException
    MethodParameters:
            Name  Flags
      connection  
}
SourceFile: "ConnectionProvider.java"