src/main/java/com/appslandia/common/jdbc/ConnectionImpl.java
@Override
	public void close() throws java.sql.SQLException {
		if (!this.conn.isClosed()) {
			ConnectionImpl outer = this.outer;
			this.conn.close();

			this.outer = null;
			CONNECTION_HOLDER.set(outer);
		}
	}
@Override
	public void close() throws java.sql.SQLException {
		if (!this.conn.isClosed()) {
			ConnectionImpl outer = this.outer;
			this.conn.close();

			this.outer = null;
			CONNECTION_HOLDER.set(outer);
		}
	}
AutoCloseable