Seperate sh command in multiple lines

Question

I have a sh command in jenkinsfile.

sh 'command1 command2'

How to write this in multiple lines?

sh '''
command1 \
command2
'''

or

sh '''
command1 &&
command2
'''

Answer 1

The solution is :

sh """
command1 \\
command2 \\
"""

That worked for me.

Answer 2

I think that you should mix both:

sh '''
command1 && \
command2
'''

&& allows another command

\ tells to shell to ignore the following character (the new line)