lib/opentelemetry/trace/span.rb in opentelemetry-api-0.14.0 vs lib/opentelemetry/trace/span.rb in opentelemetry-api-0.15.0

@@ -49,9 +49,12 @@
       # documents} certain "standard attributes" that have prescribed semantic
       # meanings.
       #
       # @param [String] key
       # @param [String, Boolean, Numeric, Array<String, Numeric, Boolean>] value
+      #   Values must be non-nil and (array of) string, boolean or numeric type.
+      #   Array values must not contain nil elements and all elements must be of
+      #   the same basic type (string, numeric, boolean).
       #
       # @return [self] returns itself
       def set_attribute(key, value)
         self
       end