Suppress CS0618 for entire file [Answered]

Can I suppress CS0618 for an entire file? I tried with

[System.Diagnostics.CodeAnalysis.SuppressMessage("Warning", "CS0618: Type or member is obsolete", Justification = "Some reason")]

[System.Diagnostics.CodeAnalysis.SuppressMessage("Warning", "CS0618: Type or member is obsolete", Justification = "Some reason")]

but it doesn't look correct. How can I achieve this?
I want to avoid to

#pragma warning disable CS0618 // Type or member is obsolete

#pragma warning disable CS0618 // Type or member is obsolete

on each single occurrence. And I want to avoid a global setting.