class ElasticAPM::TraceContext::Tracestate

def self.parse(header)
  # HTTP allows multiple headers with the same name, eg. multiple
  # Set-Cookie headers per response.
  # Rack handles this by joining the headers under the same key, separated
  # by newlines, see https://www.rubydoc.info/github/rack/rack/file/SPEC
  new(String(header).split("\n"))
end

def initialize(values = [])
  @values = values
end

def to_header
  values.join(',')
end