class Prism::InNode

^^^^^^^^^^^
case a; in b then c end
Represents the use of the ‘in` keyword in a case statement.

def self.type

def self.type: () -> Symbol

class, but should be faster in a case statement or an array comparison.
Note that like #type, it will still be slower than using == for a single
splitting on the type of the node without having to do a long === chain.
Similar to #type, this method returns a symbol that you can use for 
def self.type
  :in_node
end

def accept(visitor)

def accept: (Visitor visitor) -> void 
def accept(visitor)
  visitor.visit_in_node(self)
end

def child_nodes

def child_nodes: () -> Array[nil | Node] 
def child_nodes
  [pattern, statements]
end

def comment_targets

def comment_targets: () -> Array[Node | Location] 
def comment_targets
  [pattern, *statements, in_loc, *then_loc]
end

def compact_child_nodes

def compact_child_nodes: () -> Array[Node] 
def compact_child_nodes
  compact = []
  compact << pattern
  compact << statements if statements
  compact
end

def copy(**params)

def copy: (**params) -> InNode 
def copy(**params)
  InNode.new(
    params.fetch(:pattern) { pattern },
    params.fetch(:statements) { statements },
    params.fetch(:in_loc) { in_loc },
    params.fetch(:then_loc) { then_loc },
    params.fetch(:location) { location },
  )
end

def deconstruct_keys(keys)

def deconstruct_keys: (Array[Symbol] keys) -> { pattern: Node, statements: StatementsNode?, in_loc: Location, then_loc: Location?, location: Location } 
def deconstruct_keys(keys)
  { pattern: pattern, statements: statements, in_loc: in_loc, then_loc: then_loc, location: location }
end

def in

def in: () -> String 
def in
  in_loc.slice
end

def initialize(pattern, statements, in_loc, then_loc, location)

def initialize: (Node pattern, StatementsNode? statements, Location in_loc, Location? then_loc, Location location) -> void 
def initialize(pattern, statements, in_loc, then_loc, location)
  @newline = false
  @pattern = pattern
  @statements = statements
  @in_loc = in_loc
  @then_loc = then_loc
  @location = location
end

def inspect(inspector = NodeInspector.new)

def inspect(NodeInspector inspector) -> String 
def inspect(inspector = NodeInspector.new)
  inspector << inspector.header(self)
  inspector << "├── pattern:\n"
  inspector << inspector.child_node(pattern, "│   ")
  if (statements = self.statements).nil?
    inspector << "├── statements: ∅\n"
  else
    inspector << "├── statements:\n"
    inspector << statements.inspect(inspector.child_inspector("│   ")).delete_prefix(inspector.prefix)
  end
  inspector << "├── in_loc: #{inspector.location(in_loc)}\n"
  inspector << "└── then_loc: #{inspector.location(then_loc)}\n"
  inspector.to_str
end

def then

def then: () -> String? 
def then
  then_loc&.slice
end

def type

def type: () -> Symbol

keys will use a jump table.
you can take advantage of the fact that case statements with all symbol
it uses a single integer comparison, but also because if you're on CRuby
can use for comparison. This is faster than the other approaches because
Instead, you can call #type, which will return to you a symbol that you

method calls, and/or array allocations.
these approaches are relatively slow because of the constant lookups,
case statement and doing `case node; when cls1; when cls2; end`. Both of
calling `[cls1, cls2].include?(node.class)` or putting the node into a
classes to see what kind of behavior to perform. Usually this is done by
Sometimes you want to check an instance of a node against a list of 
def type
  :in_node
end