The step matched two or more step definitions.

The step matched one step definition and failed execution.

The step matched one step definition and passed execution.

The step matched one step definition and signalled pending during execution.

The step matched one step definition but was not executed because the previous step was not PASSED.

The step matched no step definitions.

The step hasn't been matched or executed.

* An attachment represents any kind of data associated with a line in a [Source](#io.cucumber.messages.Source) file.

The structure is pretty close of the Timestamp one.

* All the messages that are passed between different components/processes are Envelope messages.

* The [AST](https://en.wikipedia.org/wiki/Abstract_syntax_tree) of a Gherkin document.

* A comment in a Gherkin document.

* The top level node in the AST.

* A child node of a `Feature` node.

* A `Rule` node.

A step.

A row in a table.

A cell in a `TableRow`.

* A tag.

* Points to a line and a column in a text file.

* A `Pickle` represents a template for a `TestCase`.

* An executable step.

* A tag.

* A wrapper for either a doc string or a table.

* A source file, typically a Gherkin document.

* Points to a [Source](#io.cucumber.messages.Source) identified by `uri` and a [Location](#io.cucumber.messages.Location) within that file.

* Represents a single argument extracted from a step match and passed to a step definition.

* A `TestCase` contains a sequence of `TestStep`s.

* A `TestStep` is derived from either a `PickleStep` combined with a `StepDefinition`, or from a `Hook`.

DEPRECATED.

DEPRECATED.

From https://github.com/protocolbuffers/protobuf/blob/master/src/google/protobuf/timestamp.proto.

* Status of a `TestStep`.