Unicode.Property.emoji_modifier_base-question-mark
You're seeing just the function
emoji_modifier_base-question-mark, go back to Unicode.Property module for more information.
Returns a boolean indicating if the
codepoint or string has the property
:emoji_modifier_base.
For string parameters, all codepoints in
the string must have the :emoji_modifier_base
property in order for the result to be true.