=======================================
basic indentifiers
=======================================
int x = y;
---
(compilation_unit
(field_declaration
(variable_declaration
(predefined_type)
(variable_declarator (identifier) (equals_value_clause (identifier))))))
=======================================
indentifiers with keyword names
=======================================
int @var = @const;
---
(compilation_unit
(field_declaration
(variable_declaration
(predefined_type)
(variable_declarator (identifier) (equals_value_clause (identifier))))))