func (event *Event) Body() (body string, ok bool) {
	value, exists := event.Content["body"]
	if !exists {
		return
	}
	body, ok = value.(string)
	return
}
Body returns the value of the "body" key in the event content if it is
present and is a string.
package gomatrix
import (
	"html"
	"regexp"
)
type Event struct {
	StateKey  *string                `json:"state_key,omitempty"`  
	Sender    string                 `json:"sender"`               
	Type      string                 `json:"type"`                 
	Timestamp int64                  `json:"origin_server_ts"`     
	ID        string                 `json:"event_id"`             
	RoomID    string                 `json:"room_id"`              
	Content   map[string]interface{} `json:"content"`              
	Redacts   string                 `json:"redacts,omitempty"`    
	Unsigned  map[string]interface{} `json:"unsigned"`             
}