Add shortcuts for commonly used functions

src/types/common.rs

@@ -37,6 +37,10 @@ impl ContentBuilder {
         }
     }
 
+    pub fn add_text_part<T: Into<String>>(self, text: T) -> Self {
+        self.add_part(Part::Text(text.into()))
+    }
+
     pub fn add_part(mut self, part: Part) -> Self {
         match &mut self.content.parts {
             Some(parts) => parts.push(part),

src/types/generate_content.rs

@@ -3,7 +3,7 @@ use std::collections::HashMap;
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
-use super::{Content, VertexApiError};
+use super::{Content, Role, VertexApiError};
 use crate::error::Result;
 
 #[derive(Clone, Default, Serialize, Deserialize)]
@@ -37,6 +37,11 @@ impl GenerateContentRequestBuilder {
         }
     }
 
+    pub fn add_text_content<T: Into<String>>(self, role: Role, text: T) -> Self {
+        let content = Content::builder().role(role).add_text_part(text).build();
+        self.add_content(content)
+    }
+
     pub fn add_content(mut self, content: Content) -> Self {
         self.request.contents.push(content);
         self
@@ -57,6 +62,10 @@ impl GenerateContentRequestBuilder {
         self
     }
 
+    pub fn system_instruction_text<T: Into<String>>(self, text: T) -> Self {
+        self.system_instruction(Content::builder().add_text_part(text).build())
+    }
+
     pub fn system_instruction(mut self, system_instruction: Content) -> Self {
         self.request.system_instruction = Some(system_instruction);
         self