# Functions
ExtractVariables returns a map of all the variables defined in the specified composefile (dict representation) and their default value if any.
Substitute variables in the string with their values.
SubstituteWith substitute variables in the string with their values.
# Structs
InvalidTemplateError is returned when a variable template is not in a valid format.
No description provided by the author
# Type aliases
Mapping is a user-supplied function which maps from variable names to values.
SubstituteFunc is a user-supplied function that apply substitution.