src/Language/Parser.php
private function parseInputObjectTypeDefinition()
    {
        $start       = $this->lexer->token;
        $description = $this->parseDescription();
        $this->expectKeyword('input');
        $name       = $this->parseName();
        $directives = $this->parseDirectives(true);
        $fields     = $this->parseInputFieldsDefinition();

        return new InputObjectTypeDefinitionNode([
            'name'        => $name,
            'directives'  => $directives,
            'fields'      => $fields,
            'loc'         => $this->loc($start),
            'description' => $description,
        ]);
    }
private function parseInputObjectTypeDefinition()
    {
        $start       = $this->lexer->token;
        $description = $this->parseDescription();
        $this->expectKeyword('input');
        $name       = $this->parseName();
        $directives = $this->parseDirectives(true);
        $fields     = $this->parseInputFieldsDefinition();

        return new InputObjectTypeDefinitionNode([
            'name'        => $name,
            'directives'  => $directives,
            'fields'      => $fields,
            'loc'         => $this->loc($start),
            'description' => $description,
        ]);
    }
@return InputObjectTypeDefinitionNode

@throws SyntaxError