Argument is a representation of the GraphQL Argument.

Directive is a representation of the GraphQL Directive.

DirectiveDefinition is a representation of the GraphQL DirectiveDefinition.

EnumTypeDefinition defines a set of possible enum values.

EnumValueDefinition are unique values that may be serialized as a string: the name of the represented value.

ExecutableDefinition represents a set of operations or fragments that can be executed against a schema.

Extension type defines a GraphQL type extension.

Field represents a field used in a query.

FieldDefinition is a representation of a GraphQL FieldDefinition.

FragmentDefinition is a representation of the GraphQL FragmentDefinition.

FragmentSpread is a representation of the GraphQL FragmentSpread.

InlineFragment is a representation of the GraphQL InlineFragment.

InputObject types define a set of input fields; the input fields are either scalars, enums, or other input objects.

InputValueDefinition is a representation of the GraphQL InputValueDefinition.

InterfaceTypeDefinition recusrively defines list of named fields with their arguments via the implementation chain of interfaces.

List represents a GraphQL ListType.

ListValue represents a literal list Value in the GraphQL specification.

NonNull represents a GraphQL NonNullType.

NullValue represents a literal `null` Value in the GraphQL specification.

ObjectField represents field/value pairs in a literal ObjectValue.

ObjectTypeDefinition represents a GraphQL ObjectTypeDefinition.

ObjectValue represents a literal object Value in the GraphQL specification.

OperationDefinition represents a GraphQL Operation.

PrimitiveValue represents one of the following GraphQL scalars: Int, Float, String, or Boolean.

ScalarTypeDefinition types represent primitive leaf values (e.g.

Schema represents a GraphQL service's collective type system capabilities.

TypeName is a base building block for GraphQL type references.

Union types represent objects that could be one of a list of GraphQL object types, but provides no guaranteed fields between those types.

Variable is used in GraphQL operations to parameterize an input value.

NamedType represents a type with a name.

A Selection is a field requested in a GraphQL operation.

Value represents a literal input or literal default value in the GraphQL Specification.

ArgumentList is a collection of GraphQL Arguments.

FieldsDefinition is a list of an ObjectTypeDefinition's Fields.

A SelectionSet represents a collection of Selections http://spec.graphql.org/draft/#sec-Selection-Sets.