pub const FieldCall = struct flags: Call.FlagsNote: Flags must come first so that unusedResultExpr can find it when it goes to modify them.
obj_ptr: Reffield_name_start: NullTerminatedStringOffset into string_bytes.
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3124 pub const FieldCall = struct {
// Note: Flags *must* come first so that unusedResultExpr
// can find it when it goes to modify them.
flags: Call.Flags,
obj_ptr: Ref,
/// Offset into `string_bytes`.
field_name_start: NullTerminatedString,
}
Stored inside extra, with trailing arguments according to
args_len. Implicit 0. arg_0_start: u32, // always same asargs_lenargs_lenarg_N_start is the same as arg_N-1_end