Set parameter customHeader in all server calls

[herbecon]

What type of issue are you creating?

• Bug
• Enhancement
• Question

What version of this module are you using?

• 2.0.10 (Stable)
• 2.1.0-rc.n (2.1 Release Candidate n)
• Other

Write other if any: 2.3.1

Please add a description for your issue:

On my client, I need to set a parameter in the HTTP header for any calls to the server's API.

Occasionally, I set a value to the customHeaders parameter but this time I want to perform this operation on all server calls.

Is this possible without using the customHeaders parameter?